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Lam raamt No. 75,585, ma Mme/t 17, 1868.

IMPROVEMENT -IN BASE-BURIN G STOVES.

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Be it known thatl, B. SE'XTOM of Baltimore, in the county of Baltimere, and State of Maryland, have vinvented certain new anduseful" Improvements in Base-Burning Stoves;A and I do hereby declare thatv the follpiving is a full, clear, and exact description thereof',` reference being hady to theaccompanying drawings, making a part of this specification, in which#- 4 i Figure 1, sheet '1, is a front elevation ofthe improved stove.

Figure 2, sheet 1 is a'vertical central section, taken laterally through thc stove. Figure 3, shee't 1, is atop view voi' all that portion of the stove below the coal-supply chamber. Figure 4,she et 1, is a section, taken vinthe h oriaontal plane indicated by lred line y in g. 2. Figure 5, sheet 2, is a section, taken iu a verticallongitudinal plane through the centre of the stove. Figurev, sheet 2, slloivslthe novel manner of hingingand supporting the grate. Figure 7 is a perspective view of theilluminating-ring. Similar letters of reference indicate corresponding partsl in the several gures. N This invention relates Ainpart to certain novel improvements on base-burning stoves, wherein the external wall of the coal-supply rescrvcirfis not encased, butjexposed, so as to form the outer wall of the intermediate section of the stove. -It also relates in part to certain improvementson base-burners, wherein provision is'made "for conducting the products of combustion rising in the tire-chamber from this chamber to anhupper heat-A radiating qhamberior section, arranged ahove the coalfsupply-reservoir, andicomm'nnicating' with the main 4draught-flue or chimney; anditalso relates to au improvement on base-burners which are adapted for exposing 4the light of the fire through certain illunilinatingdvindows or doors arrangedabout the fire-chambers of the stoves.

V *i The object ofthe first part of my invention is to improve coal-supply reservoirs, which are arranged over irepots for supplying'fuel thereto, by constructing them with upwardly-flaring sides, so that soft or bituminous cloaL/which. swellsy or expands considerably when heated, shall not be very liable to clog.l the lower end of said reservoir, but shall allow of a free discharge of the coal, commensurate with the consumption thereof, as will be hereinafter described.` Q i i I Another object oi` my invention Vis to lieve illuminating-doorsor Windows applied to a downwardly-flaring ring, which ring is interposed betwecnza Ere-chamber and coal-supply reservoir, and so arranged as to expose throughits windows the light of the re in the fire-pot, as will be hereinafter described. A

` yAnother object of my invention is to provide passagesfor the escape of the products of combustion arising in the fire-pot' from the lire-pot or chamber toa chamber which is arranged'over the coal-supply'. reservoir, and

. which is so constructed as to occupy a horizontal space no greater inarea than that of the top of said reservoir,

as will be hereinafter described. It also provides'for combining ina base-burning stove the following elements,

to wit., a chamber which is adapted for heating air and supplying such air whithersoever itv may be'required; a..

coal-supply reservoir, having doors or illuminating-windows at its hase; a heatsradiating chamber overthe coal-reservoir, and'xneans for 'conducting' the products-of combustion from the re-chamber into -said radiatingchamber, as will be hereinafter described. It also providesfor conducting air andi'lying ash-dust from the ash-box belo'iv the grate directly into the {ire-chamber or pot at or near the top thereof, as will be hereinafter.

described. It also provides for supporting a grate, which can beboth' tilted'and .oscillated, in such manner that a very wide base-support is aiifordedit, lwhich will prevent itfrom being liable to sag or become warped by the heat, as will be hereinafter described. l

To 'enable othcrsisk-illed in the art to understand my invention, I ivill describe its construction and operation. I

A represents the ash-chamber or box, C a base-ring, which is supported, thereon, and D is an upwardlyaring lire-pot, which is supported upon the base-ring C, and surrounded by. a `jacket, E. This jacket E and ire-potd) come together at their upper edges, and form an vannular air-heating chamber, 11:, into Whiclrfair is introduced through thei perforations'b b,'which .are made through the hase-ring C outside otl the ash-box, as shown in figs. 2 and 5. lheair which is Aheated in chamber-a may be conducted oi through the exit c into other apartments, or nheresoever may be desired. The air which is to be heated in chamber a may he taken from outside of the room, or from'the roomin whieh thestov'e is arranged. l 4

Therepot'D is of the form of the frustum of acone, and it may he lined inside with fire-brick D if desired.

Its upper part presents a very wide chamber, F, in which combustion 'takes place most freely. On top of this upwardly-flaring re-pot D is a flaring ring, Gr, which is also ofthe form of the frustum of ai cone, with its base resting upon and suitably seeuredto the fire-pot D orjaclret E, in a manner substantially as shown in the drawings. This ring isadaptedto receive through it and to serve as a support for a coal-supply reservoir, H, the lower end of which may extend down as far as desired into the combustion-space The fire-pot or jacket, or both of these parts, are in this manner connected to and made to serve as the support for the coal-reservoir. This reservoir dares upward, and is capped by a chamber, I, the base, d, of which is of the same horizontal area as the topof said reservoir. A passage, J, leads through chamber I into the'reservoir H, and serves as a means through which the latter can be supplied withcoal. The upper end of this passage J' is closed by the removable cap e, which prevents the escape of gas into the room. If desirahleone or more exit-passages leading from' reservoir H into chamber I ,may be provided, for the purpose of allowing any gas which may accumulate in the reservoir above the coal therein to escape into thedraughtiue. The pipes K K are used as the means for conducting the products of combustion from the combustion-chamber, beneath the reservoir H and ring G, into the chamber I above the reservoir, from which chamber I, the products escape into a main flue or chimney through the exit g, shown in iig. 5. The upper portions of the pipes or radiators K K are curved, so that th'ey may be more readilyeleaned of soot, by means of awire and brush passed up through them, than they could be if these upper portions were made angular. I do not,however, confine myself to the circular form of the elbows, as other forms may be adopted. These radiating-pipes K proceed from the ring G and enter the ring r. of theenlarged base-section of chamber I, as clearly shown in the drawings, figs. 1 and 2. The ring Gr presents an inclined surface; that is to say, it inclines from its point of attachment to the reservoir H to its point of sup. port upon the upper edge of the ire-pot D, or outer casing E; thus it partially-caps the lire-chamber. Through this ring, openings R are made, at suitable distances apart, either entirely or partly around it, which openings are covered by means of doors, applied so as to slide or to open n hinges, or some of the doors may be applied so as not to open at all. These'doors I provide with mica, so that the lightof the fire in the hre-chamber can be seen. The doors or windows thus arranged not only present an illuminatedsurface, but they also aord access to the interior of the fire-chamber or pot, for feeding the fire, and for stirring and breaking up lumps of coal therein they also afford free access to the lower end of the coal-reservoir H for releasing coal that may have lodged therein. The ring G, shown in tig. 7, is provided with three-illuminated windows or doors P l? I?, but they may extend entirely around it, if desired. The openings S S shown-through this ring are ferfreceiving the lower ends 'of the pipes or radiators K K.

By reference to figs. 4 and 5 of the drawings, it will be seen that I have pipes t t leading from the fron part of the ash-pit A, through the annular air-heating chamber a, and into the {ire-chamberor combustionspace F. These pipes or ues t t are designed for supplying air to the fire in the said space F, so as to` render combustion very complete therein, also to carry o` the light ash-dustrising in the ash-box during the movements of the grate. I v i The bottom of rire-pot D is provided with a grate, L, which is so supported that it mayreceive a horizontal oscillating motion about a central pin, @for it may be tilted, as shown in figs. 4 and-6. The grate L may be perforated in any suitable manner. Its pintle p pivots it to a hinge-leaf, r, which is pivoted, by means of a horizontal pin, u, to the ends of a semicircular bar, M, that has three radial arms M' projecting from it. By thus attaching the grate toits supports, the weight is taken from the centre and divided on each side thereof, so as to present a wide basesupport, with a short pivot, u, whichis not liable to be 'warped by heat and weight upon-it.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The flaring or funnelfshaped chamber H, constituting the magazine' and intermediate outer wall of the stove, in combination with the contracted passage J, substantially as and for the purpose described.

' 2. The arrangement of the air-heating chamber E, applied aronnd'the tire-pot D, between the base and top of said pot, with acoal-reservoir, which constitutes the single exposed outer intermediate wall of the stove, and is united to the fire-pot by an inclined illumination-ring, G, substantially as and for -thcpurposc described.

3. An upwardly-flaring coal-reservoir, exposed as* described, provided with a supporting-ring, G, having door or window-openings through it, and arranged over a daring {ire-chamber or pot, substantially as described.

S. "B, SEXTON.

Witnesses:

SAML. McCoY, L. A. Howsnn, Jr. 

